Volvo V70 A6 AGR Seat - For Sale

Hello!

Perhaps someone can give me a tip.

I have a Volvo V70 with the same diesel engine as the Audi A6 4A, with 140 horsepower (AEL).

Customer complains about performance loss.

I've just taken a look at the values.

LMM at idle: approximately 450 mg.

Full throttle target: approximately 1000mg.

The boost pressure is also quite similar.

AGR remains constant at 5%.

The AGR pressure sensor has a 12V voltage, and I have 800 mbar of vacuum in the upper vacuum hose, but there is no vacuum at all in the lower hose that connects to the AGR valve.

Could it be because I'm not getting a vacuum, since the value is always stuck at a constant 5%?
Could this also be triggered by a faulty mass airflow sensor (MAF), which is now being used as a replacement value?

Thank you, Chris.

AGR is not functioning.

There's probably a blockage somewhere in the control cable.

Hi!

No, the hoses are clear, but I'm not getting any vacuum from the converter anymore, which is needed for the EGR valve.

Is there always a vacuum here? Also, even at idle, is the control signal only 5%?

chriskross wrote:

Is there always a vacuum here?

Yes.
If there is vacuum and voltage at the converter, but nothing at the control hose, then the converter is defective.

ok.

What confuses me is the constant pulse width ratio of 5%, or should I not expect to see 12V at the connector?

because normally the EGR valve is turned off at 5%, so there's no vacuum, or am I completely mistaken about that now ?

chriskross wrote:

because normally the 5% for EGR is deactivated, so there's no vacuum, or am I completely mistaken

. This is how it is with VAG. But maybe it's the opposite with Volvo?
"Because if you have 12V at the connector, that clearly indicates 100% control. Normally, you would only measure around 5-6V with a multimeter, because the TV is idling at around 50%."

Okay, thanks. I'll go ahead and replace that part; it costs a whopping €180 at Volvo.

chriskross wrote:

ok, thank you, I'll go ahead and replace that part; it costs a whopping €180 at Volvo.

Respect.
Is it possible that the VAG version won't work? Has Volvo changed it so much?

Just a quick question, which V70, the 1 or the 2?
I believe Volvo later significantly modified the AELs (d2525t).
Specifically in the V70/2 model with the MSA 15 control unit and the mass airflow sensor (MAF), a worn-out EGR valve immediately triggers an error message, unlike in VW vehicles.

The S80 model year was 1999.

Interestingly, I ran an actuator diagnostic on the older part, and since then, I've had normal vacuum pressure again, and everything is working perfectly.

Unknown why it's working again, software bug?

hi

In my opinion, you can always find these parts used. If you need anything, I have two Volvo TDI wrecks here!

Sure, here is the translation of the text from German to English:

"Hello"